import React, { useState, useEffect, useRef } from 'react';
import { Button, Dropdown, Space } from 'antd';
import { FixedSizeList as List } from 'react-window';
import { useParams } from 'react-router-dom';
import '../../style/main.css';
import '../../style/kuangjia.css';

const Playlist = ({ onSongSelect }) => {
  const ulRef = useRef(null)
  const handleSongClick = async (song) => {
    onSongSelect(song);
  };
  const { playlistId } = useParams();
  const [playlistData, setPlaylistData] = useState({});
  const [songLists, setSongLists] = useState({ songs: [] });
  const [userData, setUserData] = useState({ nickname: '', avatarUrl: '' });
  const [loading, setLoading] = useState(true);

  console.log('正在搜索Playlist ID:', playlistId);

  useEffect(() => {
    setLoading(true);
    fetch(`http://localhost:3000/playlist/detail?id=${playlistId}`)
      .then((response) => response.json())
      .then((data) => {
        setPlaylistData(data.playlist);

        const userId = data.playlist.userId;
        fetch(`http://localhost:3000/user/detail?uid=${userId}`)
          .then((response) => response.json())
          .then((userData) => {
            setUserData({
              nickname: userData.profile.nickname,
              avatarUrl: userData.profile.avatarUrl,
            });
          })
          .catch((error) => console.error('Error fetching user data:', error));
      })
      .catch((error) => console.error('Error fetching playlist data:', error))
      .finally(() => {
        setLoading(false);
      });
  }, [playlistId]);

  useEffect(() => {
    fetch(`http://localhost:3000/playlist/track/all?id=${playlistId}&limit=100&offset=1`)
      .then((response) => response.json())
      .then((data) => {
        setSongLists(data);
      })
      .catch((error) => {
        console.error('Error fetching song data:', error);
      });
  }, [playlistId]);

  const formatDuration = (duration) => {
    const minutes = Math.floor(duration / 60000);
    const seconds = ((duration % 60000) / 1000).toFixed(0);
    return (minutes < 10 ? '0' : '') + minutes + ":" + (seconds < 10 ? '0' : '') + seconds;
  };

  const getPlayUrl = (id) => {
    return fetch(`http://localhost:3000/song/url?id=${id}`)
      .then((response) => response.json())
      .then((data) => data.data[0]?.url || '')
      .catch((error) => {
        console.error('Error fetching song URL:', error);
        return '';
      });
  };

  const [songData, setSongData] = useState([]);
  useEffect(() => {
    if (songLists.songs.length > 0) {
      const fetchSongData = async () => {
        const data = await Promise.all(
          songLists.songs.map(async (song) => {
            const playUrl = await getPlayUrl(song.id);
            const isFavorited = await checkFavorStatus(song.id);
            return {
              musicId: song.id,
              musicName: song.name,
              artName: song.ar[0]?.name || '未知',
              album: song.al.name,
              coverUrl: song.al.picUrl,
              lyricUrl: `http://localhost:3000/lyric?id=${song.id}`,
              dt: song.dt, // Convert to seconds
              playUrl,
              liked: isFavorited,
            };
          })
        );
        setSongData(data);
      };
      fetchSongData();
    }
  }, [songLists]);

  const checkFavorStatus = async (songId) => {
    try {
      const response = await fetch(`http://localhost:8088/favor/${songId}`);
      const data = await response.json();
      if (data.code === 200 && data.data !== null) {
        return true;
      } else {
        return false;
      }
    } catch (error) {
      console.error("Error checking favor status: ", error);
      return false; // 默认未收藏
    }
  };

  const handleLikeClick = async (songId) => {
    const song = songData.find((s) => s.musicId === songId);
    const newLikedStatus = !song.liked;
    // 更新状态
    setSongData((prevSongs) =>
      prevSongs.map((s) =>
        s.musicId === songId ? { ...s, liked: newLikedStatus } : s
      )
    );
    const songPost = {
      musicId: song.musicId,
      musicName: song.musicName,
      artName: song.artName,
      album: song.album,
      coverUrl: song.coverUrl,
      playUrl: song.playUrl,
      lyricUrl: `http://localhost:3000/lyric?id=${song.musicId}`,
      dt: song.dt,
      liked: newLikedStatus,
    };
    try {
      if (newLikedStatus) {
        // 收藏操作 (POST 请求)
        const response = await fetch("http://localhost:8088/favor", {
          method: "POST",
          headers: {
            "Content-Type": "application/json",
          },
          body: JSON.stringify(songPost),
        });

        if (!response.ok) {
          throw new Error("Failed to update favor status");
        }

        console.log("Successfully added song to favorites:", songId);
      } else {
        // 取消收藏操作 (DELETE 请求)
        const response = await fetch(`http://localhost:8088/favor/${songId}`, {
          method: "DELETE",
        });

        if (!response.ok) {
          throw new Error("Failed to remove song from favorites");
        }

        console.log("Successfully removed song from favorites:", songId);
      }
    } catch (error) {
      console.error("Error handling favor request: ", error);
    }
  };
  const handlePlayclick = async () => {
    const response = await fetch("http://localhost:8088/playing/all", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
      body: JSON.stringify(songData),
    });

    if (!response.ok) {
      throw new Error("Failed to update favor status");
    }

    console.log("Successfully added song to favorites:", songId);
  }

  const items = (songId) => [
    {
      key: '1',
      label: (
        <a
          href="#"
          onClick={(e) => {
            e.preventDefault(); // 阻止默认行为
            const song = songData.find((s) => s.musicId === songId); // 获取当前歌曲
            if (song.liked) {
              alert("歌曲已收藏");
            } else {
              handleLikeClick(song.musicId); // 执行收藏/取消收藏操作
            }
          }}
        >
          收藏
        </a>
      ),
    },
    {
      key: '2',
      label: (
        <a target="_blank" rel="noopener noreferrer" href="https://www.aliyun.com">
          下载
        </a>
      ),
    },
    {
      key: '3',
      label: (
        <a target="_blank" rel="noopener noreferrer" href="https://www.luohanacademy.com">
          添加到歌单
        </a>
      ),
    },
    {
      key: '4',
      label: (
        <a target="_blank" rel="noopener noreferrer" href="https://www.luohanacademy.com">
          添加到播放
        </a>
      ),
    },
  ];
  const renderRow = ({ index, style }) => {
    const item = songData[index];
    return (
      <li key={index} style={style} onDoubleClick={() => handleSongClick(item)}>
        <div className="hideicon">
          <i className="ri-play-fill"></i>
        </div>
        <div className="search_songlist_left">
          <div className="song_information">
            <img
              src={item.coverUrl}
              alt={item.musicName}
            />
            <div className="song_name">
              <span id="songname">{item.musicName}</span>
              <span id="singer">{item.artName}</span>
            </div>
          </div>
          <div className="dowhat">
            <i
              className={item.liked ? "ri-heart-3-fill" : "ri-heart-3-line"}// 根据每首歌的状态切换图标
              onClick={(e) => {
                e.stopPropagation();
                handleLikeClick(item.musicId);
              }}
            ></i>
            <div className='menu'>
              <Space direction="vertical">
                <Space wrap>
                  <Dropdown
                    menu={{
                      items: items(item.musicId), // 动态传入当前歌曲的 ID
                    }}
                    placement="topLeft"
                    trigger={['click']}
                  >
                    <i className="ri-menu-4-line"></i>
                  </Dropdown>
                </Space>
              </Space>
            </div>
          </div>
        </div>
        <div className="search_songlist_right">
          <div id="songalbum">{item.album}</div>
          <div id="songduration">{formatDuration(item.dt)}</div>
        </div>
      </li>
    )
  }

  return (
    <div className="page">
      {loading ? (
        <div className="loadingPage">
          <div className="loadcomponents">
            <div className='loader2'></div>
            <div className='loader1'></div>
          </div>
        </div>
      ) : (
        <div className="playlistcontainer">
          <div className="playlistinformation">
            <div className="playlistImg">
              <img src={playlistData.coverImgUrl} alt="" />
            </div>
            <div className="list-maininformation">
              <div id="playlistname">{playlistData.name}</div>
              <div className="playlistavatar">
                <img src={userData.avatarUrl} alt="" />
                <span id="playlistusernickname">{userData.nickname}</span>
              </div>
              <div className="introduce">{playlistData.description}</div>
              <div className="playlistControl">
                <button onClick={handlePlayclick}><i className="ri-play-fill"></i> 播放</button>
                <button><i className="ri-download-fill"></i> 下载</button>
                <button><i className="ri-heart-3-line"></i> 收藏</button>
                <button><i className="ri-share-fill"></i> 分享</button>
              </div>
            </div>
          </div>
          <div className="playlistnav">
            <ul>
              <li>歌曲</li>
              <li>评论</li>
            </ul>
          </div>
          <div className="search_songlist">
            <div className="serch_nav">
              <div>歌名/歌手</div>
              <div className="serch_nav_right">
                <div>专辑</div>
                <div>时长</div>
              </div>
            </div>
            <ul className='lisMain' ref={ulRef}>
              <List
                height={ulRef.current ? ulRef.current.clientHeight : 0}
                itemCount={songData.length}
                itemSize={50}
                width="100%"
              >
                {renderRow}
              </List>
            </ul>
          </div>
        </div>
      )}
    </div>
  );
};

export default Playlist;
